package cn.jiyun.usain.service;

import cn.jiyun.usain.pojo.Student;
import com.baomidou.mybatisplus.extension.service.IService;

import java.util.List;


public interface HelloService extends IService<Student> {




     void add(Student student) ;

    List<Student> findAll();

    Student findById(int id);


    void update(Student student);

    void delete(Integer id);
}
